[INFO] cloning repository https://github.com/caoyx1990/LearnRustProject
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/caoyx1990/LearnRustProject" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaoyx1990%2FLearnRustProject", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaoyx1990%2FLearnRustProject'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d8766f700769d3d79b77e9fb370a4e83d7935224
[INFO] checking caoyx1990/LearnRustProject against master#092a284ba0421695f2032c947765429fd7095796 for pr-139763
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaoyx1990%2FLearnRustProject" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] error: unable to write symref for HEAD: No space left on device


failed to checkout https://github.com/caoyx1990/LearnRustProject

Caused by:
    command failed: exit status: 1